| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Practicing Problem Solving | 978-0-07-505650-8 (0-07-505650-X) | 1984 |
| Practicing Problem Solving, Grade 3 | 978-0-07-505645-4 (0-07-505645-3) | 1984 |
| Problem Solving Practicing, Grade 5 | 978-0-07-505647-8 (0-07-505647-X) |
H.A. · M.A. · M. H. · M. Hansen · M.P. · M.P.H. · M.P. Hansen · Merrily P. Hansen · P. A. · P. H. · P. Hansen